Illinois HB 4429: BODY MASS INDEX-DISCRIMINATION

Status: Rule 19(a) / Re-referred to Rules Committee (as of 2026-03-27)

State: Illinois · Session: 104th · Bill: HB 4429

Sponsors: Anne Stava

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104TH GENERAL ASSEMBLY 
State of Illinois 
2025 and 2026
HB4429

Introduced 1/20/2026, by Rep. Anne Stava 

SYNOPSIS AS INTRODUCED:

215 ILCS 5/356z.88 new

410 ILCS 50/5.3 new

410 ILCS 50/5.4 new

 Amends the Illinois Insurance Code. Provides that no policy of accident or health insurance that is issued, amended, delivered, or renewed on or after January 1, 2027 may limit or otherwise alter coverage available to an insured based solely on that insured's weight or body mass index. Amends the Medical Patient Rights Act. Provides that no physician may make a diagnosis or determination of treatment based solely on a patient's body mass index. Establishes disclosure requirements for hospitals concerning the use of body mass index in diagnosis and treatment. Provides that any physician, medical student, resident, advanced practice registered nurse, registered nurse, physician assistant, licensed behavior analyst, licensed assistant behavior analyst, or clinical psychologist who conducts medical, behavioral, or psychological assessments shall only use methodology recommended by peer-reviewed clinical practice guidelines or methodology established through evidence-based standards that are widely recognized by professional medical, behavioral, or psychological organizations, respective to the form of assessment, when conducting those assessments.

LRB104 17415 BAB 30840 b

A BILL FOR

HB4429LRB104 17415 BAB 30840 b

1 AN ACT concerning regulation. 

2 Be it enacted by the People of the State of Illinois, 

3represented in the General Assembly:

4 Section 25. The Illinois Insurance Code is amended by 

5adding Section 356z.88 as follows:

6 (215 ILCS 5/356z.88 new)

7 Sec. 356z.88. Prohibition on limiting coverage based on 

8body mass inde

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